JP2830664B2 - communication unit - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a communication unit having a forced cooling structure which is removably mounted on a rack. In recent years, as shown in FIG. 4, there is a communication device in which communication units 2 are mounted in multiple stages on a rack 1 and a common unit 8 (distribution panel, receiving unit, etc.) is provided above the uppermost communication unit 2.

Such a communication unit 2 has a desired circuit device (for example, an amplifying device) housed in a box-shaped housing. A front fan is mounted on a front portion of the housing, and a rear fan is mounted on a rear portion of the housing. Thus, the circuit device is forcibly cooled.

An input / output connector 5 is provided on the front side of the communication unit 2. The communication unit 2 described above is configured to be insertable into and removable from the rack 1, and is mounted on the rack 1 in multiple stages by being inserted from the front side of the rack.

On the other hand, a vertically distributed distribution unit 3 is mounted on one side of the vertically arranged communication units 2, and a signal received from an input coaxial cable (not shown) wired along the side of the rack 1 is It is distributed to each communication unit 2 via a coaxial cord (not shown) via an input / output connector 5.

On the other side of the vertically arranged communication units 2, a vertically long combining unit 4 is mounted, and the output of each communication unit 2 is received and multiplexed via a coaxial code (not shown). And transported to an output coaxial cable (not shown) wired along the side surface of the rack 1.

[0006]

2. Description of the Related Art FIGS.
This will be described with reference to FIG. FIG. 5 is a perspective view showing the conventional example in a separated form, and FIG. 6 is a perspective view of the conventional example.

In the figure, the housing of the communication unit 2 is attached to a frame in which a unit front plate 21, a unit rear plate 22, and a pair of left and right unit side plates 51 and 52 are assembled in a frame shape, and an upper surface of the frame. It is composed of a unit upper cover 16 and a unit lower cover 17 which is engaged with the lower surface of the framework.

Reference numeral 11 denotes a heat dissipating module in which a desired number of heat dissipating elements are formed by extruding a rectangular bar made of aluminum or the like into an E-shaped cross section and having heat dissipating fins running in the front-rear direction.

Reference numeral 12 denotes a square base plate made of an aluminum plate or the like, which requires two sheets of the same shape. One base plate 12 is adhered to the upper surface of the heat dissipation module 11 by soldering the back surface, and the other base plate 12 is adhered to the lower surface of the heat dissipation module 11 by soldering the back surface.

Reference numeral 13 denotes an upper main circuit portion in which a printed board is mounted on the bottom surface of a shallow case 13A having a U-shape in plan view, and components (including heat-generating components) are mounted on the printed board as desired. The upper main circuit section 13 is sealed by a case cover 13B.

A coaxial cable 18 for phase adjustment is spirally wired in a hollow portion of the U-shape formed by the case 13A of the upper main circuit portion 13, and a pair of input / output connectors 5A are provided on the front side of the case 13A. I am wearing it.

The upper main circuit section 13 has the bottom plate of the case 13A closely attached to the surface of the upper base plate 12, and is fixed to the base plate 12 using screws. Reference numeral 14 denotes a lower main circuit portion in which a printed board is mounted on the bottom surface of the rectangular shallow case 14A, and desired components (including heat-generating components) are mounted on the printed board. The lower main circuit section 14 is sealed by a case cover 14B.

The lower main circuit portion 14 is fixed to the base plate 12 using screws by bringing the bottom plate of the case 14A into close contact with the surface of the base plate 12 below. The planar shapes of the heat dissipation module 11, the base plate 12, the upper main circuit section 13, and the lower main circuit section 14 are substantially equal.

The upper main circuit section 13 and the lower main circuit section 14 are
They are electrically connected via a printed board 34 provided along the side surface. The printed circuit board 34 has a power supply unit to be described later.
The connector 33 to which the connector 32 of 30 plugs in is mounted.

Reference numeral 21 denotes a unit surface plate constituting a front portion of the housing. The unit surface plate 21 has a shallow box shape in which four sides of a rectangular main plate member are each bent inwardly to provide an edge plate.

A plurality of front fans 23 (two in the figure) are mounted in parallel at positions corresponding to the heat radiation module 11 so as to protrude toward the surface of the main plate member of the base plate 12.
The main plate member of the unit surface plate 21 includes a front fan 23.
A power supply panel 31 to be described later is fitted on one side to provide a window frame through which a face appears, and a control panel 46 is attached to the other side of the front fan 23.

The unit surface plate 21 includes a heat radiation module 11, a base plate 12, and an upper main circuit portion 1 which are integrally fixed.
3. The inner surface of the main plate member is brought into contact with the front surface of the lower main circuit portion 14, and is fixed to the end surface of the base plate 12 using screws.

Reference numeral 22 denotes a unit rear plate constituting the rear surface of the housing. The unit rear plate 22 has a shallow box shape in which four sides of a main plate member having the same shape as the main plate member of the unit front plate 21 are bent inward to provide edge plates.

A plurality of rear fans 24 (three in the figure) are mounted in parallel so as to protrude toward the front side (rear side) of the main plate member of the unit rear panel 22. Such a unit rear plate 22 is attached to the rear surface of the heat dissipation module 11, the base plate 12, the upper main circuit portion 13, and the lower main circuit portion 14 which are integrally fixed, and the inner surface side of the main plate member is brought into contact with the base plate using screws. It is fixed to the end face of the plate 12.

Reference numeral 51 denotes a unit side plate constituting one side surface of the housing. An upper and lower side edge of the rectangular main plate member of the unit side plate 51 is bent inward to provide an edge plate, and an attachment seat for bending the front side edge outward at a right angle and screwing and fixing the frame is provided.

Reference numeral 52 denotes a unit side plate constituting the other side surface of the housing. The unit side plate 52 is formed symmetrically with the unit side plate 51 described above, and the upper and lower side edges of the main plate member are each bent inward to provide an edge plate, and the front side edge is bent outward at a right angle and screwed on the frame. An attachment seat for stopping and fixing is provided.

In the unit side plates 51 and 52, the front portion of the main plate member abuts against the edge plate of the unit front plate 21 and is fixed to the unit front plate 21 using screws, and the rear portion of the main plate member is connected to the unit rear plate 22. Abutting against the edge plate of
By fixing to 22, the frame is assembled.

Reference numeral 30 denotes a power supply unit in which a main printed board on which power supply components are mounted is mounted in an L-shaped case (the inside of the L-shape is open) in plan view. A printed board is provided on the front side of the power supply unit 30 so as to be orthogonal to the main printed board, and desired components are mounted on the printed board to form a power board 31. The power supply panel 31 is exposed on the window frame of the unit front panel 21 as described above.

Further, a pair of printed boards are provided on the case side board (shown in the figure so as to face up and down) so as to be orthogonal to the main printed board.
The connector 32 to be plugged into the connector 33 mounted on the printed board 34 described above is mounted, and the power supply unit 30 is connected to the upper main circuit unit 13,
It is designed to be connected to the lower main circuit section 14.

A cooling fin (not shown) is attached to a power supply case behind the power supply panel 31 to radiate heat of the power supply 30. The above-described power supply unit 300 is configured such that the power supply unit case is inserted into a pair of metal fittings provided inside the unit side plate 51 and screwed to the metal fittings.
It is stuck to 51.

A control unit 40 includes two printed boards 41 similar to and smaller than the main plate member of the unit side plate 52. The two printed boards 41 of the control unit 40 are electrically connected by a pair of connectors 42 mounted on each of them,
It is fixed to the unit side plate 52 by screwing it to the inside of the unit side plate 52 via a spacing tube (not shown).

The control section 40 is connected to the upper main circuit section 13, the lower main circuit section 14, and the control panel via a flexible printed board 43.
Connected to 46. As shown in FIG. 6, after the heat radiation module 11, the base plate 12, the upper main circuit portion 13, and the lower main circuit portion 14 are integrally fixed, the unit upper cover 16 is positioned on the upper surface, and is placed. The unit lower cover 17 is aligned and placed.

Then, the unit front plate 21 and the unit rear plate 22 are inserted so that the front and rear side edges of the unit upper cover 16 and the unit lower cover 17 are located inside the edge plates, respectively. The face plate 22 is fixedly screwed to the base plate 12.

Then, the unit side plate 51 with the power supply unit 30 is inserted, and the front part of the unit side plate 51 is attached to the unit surface plate 21.
The rear portion is fixed to the unit rear face plate 22 by screwing.

The unit side plate 52 with the control unit 40 is inserted, and the front of the unit side plate 52 is fixed to the unit front plate 21 and the rear of the unit side plate 52 is fixed to the unit rear plate 22 by screwing.

[0031]

The power supply unit having the above-described structure is housed in an L-shaped case in plan view, and has a power supply panel long in the left-right direction on the front side. Therefore, even if the rear fan installed behind the power supply unit is driven, there is a problem in that the power supply panel becomes an obstacle to ventilation and the cooling performance of the power supply unit is poor.

On the other hand, for maintenance and inspection of the power supply unit, the screws are removed, the unit side plate is first removed from the frame, then the screws are removed, the power supply unit is removed from the unit side plate, and the power supply unit cooling fin is removed from the power supply unit case. There must be.

That is, the conventional communication unit has a problem that maintenance and inspection of the power supply unit take time. Further, a front fan protrudes from the front side of the communication unit, and input / output connectors are respectively mounted above and below the front fan.

Therefore, there is a problem that the front fan is obstructive when the external coaxial cable is connected to the input / output connector, and that the wiring of the external coaxial cable is obstructed.

The present invention has been made in view of such a point, and an object of the present invention is to provide a communication unit having a good cooling performance of a power supply unit. Another object of the present invention is to facilitate maintenance and inspection of the power supply unit.

Still another object of the present invention is to facilitate wiring work of an external coaxial cable to be wired on the front side of a communication device.

[0037]

In order to achieve the above object, the present invention comprises a unit surface plate, a unit rear plate, a pair of left and right unit side plates, and a unit upper / lower cover as exemplified in FIG. The housing and the housing
A lower main circuit unit and a power supply unit, a front fan mounted on the front of the housing, and a rear fan mounted on the rear of the housing, the communication unit mounted detachably on the frame, Heat dissipation module 11 having a plurality of traveling heat dissipation fins
And a pair of upper and lower base plates 120 which are attached to the housing in parallel with the unit upper cover 180 and hold the heat dissipation module 110 from above and below in close contact with the upper and lower surfaces of the heat dissipation module 110. The upper main circuit section 130 where the case bottom plate is closely attached to the surface of the
0 The lower main circuit section 14 where the case bottom plate is
0, and a power supply unit housed in a power supply case 330 mounted in parallel with the heat dissipation module 110 between a pair of base plates 120.
300.

The power supply case 330 has a ventilation hole formed in the front plate and a ventilation hole formed in the rear plate, and an opening 212 facing the ventilation hole formed in the front part of the power supply unit 300.
A front fan 230 is mounted in parallel at a location corresponding to the unit front plate 210 and a rear fan 240 is mounted in parallel at a position facing the rear of the power supply unit and the rear of the heat radiating module 110. Unit rear face plate 220.

The unit surface plate 210 and the rear fan 240, which are detachably fixed to the respective base plates 120,
The pair of left and right unit side plates 510 and 520 are detachably fixed to each other, so that the unit surface plate 210 and the unit rear plate
220 and a pair of left and right unit side plates 510 and 520 are assembled in a frame shape.

The power supply case 330 is provided with upper and lower edges of a front plate and upper and lower edges of a rear plate protruding from the bottom plate and the upper plate of the power supply case 330, respectively. By inserting the upper and lower edges into the guide grooves 121 provided to face the power supply unit 120, the power supply unit 300 is detachably mounted between the pair of base plates 120.

Further, a front fan 230 is mounted inside the unit surface plate 210.

[0042]

According to the present invention, an opening is provided in the unit surface plate, ventilation holes are provided in the front plate and the rear plate of the power supply case, and the rear plate of the unit corresponds to the ventilation hole of the rear plate of the power supply case. With a rear fan.

Therefore, when the rear fan is driven, it flows into the power supply case through the opening in the unit surface plate and the ventilation hole in the front plate of the power supply case, and removes heat from the power supply unit. The air whose temperature has risen is discharged to the rear of the communication unit through the ventilation holes of the rear side plate and the rear fan.

Therefore, the cooling performance of the power supply section is improved. On the other hand, when the upper and lower edges of the front and rear plates of the power supply case are inserted into the guide grooves of the base plate, the power supply connector plugs into the mating connector, and the upper main circuit And a lower main circuit unit.

Therefore, when the unit side plate is removed,
Since the power supply unit can be easily attached and detached, maintenance work of the power supply unit is facilitated. Since the front fan is mounted inside the unit surface plate, the unit front plate 21
Only the input / output connectors, power panel components, and control panel components protrude from the front side of 0.

Therefore, connecting an external coaxial cable to the input / output connector and wiring the external coaxial cable are facilitated.

[0047]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. The same reference numerals indicate the same objects throughout the drawings.

FIG. 1 is a perspective view showing the present invention in an isolated form.
FIG. 2 is a perspective view of a main part of the present invention, and FIG. 3 is a perspective view of an embodiment of the present invention. In the figure, the housing of the communication unit 100 includes a frame in which a unit front plate 210, a unit rear plate 220, and a pair of left and right unit side plates 510 and 520 are assembled in a frame shape.
It comprises a unit upper cover 180 engaged with the upper surface of the framework and a unit lower cover 170 engaged with the lower surface of the framework.

Reference numeral 110 denotes a heat dissipating module in which a desired number of heat dissipating elements are formed by extruding a rectangular bar made of aluminum or the like into an E-shaped cross section and having heat dissipating fins running in the front-rear direction.

Reference numeral 120 denotes a substantially square plate-shaped base plate made of an aluminum plate or the like (a portion of the front side edge facing the front fan is cut into a rectangular shape).
Are provided. The length of the base plate 120 in the front-rear direction is desirably larger than (the length of the heat dissipation module 110 in the front-rear direction + the thickness of the front fan).

The width (length of the right and left) is desirably larger than (width of heat radiation module 110 + width of power supply unit 30).

One of the base plates 120 is placed on the heat radiating module 110 so that the selected side edge coincides with the side edge of the heat radiating module 110, and the back surface is soldered or the like to the upper surface of the heat radiating module 110. We adhere.

The other base plate 12 is placed on the lower side of the heat radiating module 110 so that the selected side edge coincides with the side edge of the heat radiating module 110, and the back surface is soldered or the like. It is in close contact with the lower surface of 110.

A pair of guide grooves 121 parallel to the front side edge are provided near the front side edge and near the rear side edge on the inner side surface of each base plate 120 that is not in close contact with the heat radiating module 110. The guide groove 12 of the base plate 120
A support is provided at the corner on one side so that the space between the upper and lower base plates 120 is maintained.

Reference numeral 130 denotes an upper main circuit portion in which a printed board is mounted on the bottom surface of a shallow case 130A having a U-shape in a plan view, and components (including heat-generating components) are mounted on the printed board as desired.
The upper main circuit section 130 is sealed by a case cover 130B.

The upper main circuit portion 13 is fixed to the base plate 12 using screws by bringing the bottom plate of the case 13A into close contact with the surface of the upper base plate 12. A printed board 150 constituting a control section and the like is mounted in a hollow portion in the U-shape formed by the case 130A of the upper main circuit section 130, and the printed board 150 and the upper main circuit section 130 are connected by connection lines not shown. doing. Further, the printed board 150 is provided with a control panel 460 of a unit surface board 210 described later.
Connected to

On the front side of the case 130A of the upper main circuit section 130,
A pair of input / output connectors 5A are mounted, and the connectors 5A and the input / output connectors 5 mounted on the unit surface plate 210 are connected via coaxial cables.

Reference numeral 140 denotes a lower main circuit portion in which a printed board is mounted on the bottom surface of a shallow case 140A having a U-shape in plan view, and desired components (including heat-generating components) are mounted on the printed board. The lower main circuit section 140 is sealed by a case cover 140B.

The lower main circuit portion 140 is fixed to the base plate 120 using screws by bringing the bottom plate of the case 140A into close contact with the surface of the base plate 120 below. Further, a coaxial cable for phase adjustment (corresponding to the coaxial cable 18 in FIG. 6) is meandered in a hollow portion of the lower main circuit portion 140 in the U-shape.

A U-shaped engaging metal fitting 128 is attached to the surface of the upper base plate 120 on the side of the power supply section, and the side edge of the unit upper cover 180 is inserted. Also,
On the surface of the side edge of the lower base plate 120 on the side of the power supply unit, a U-shaped engaging metal fitting 128 is attached so that the side edge of the unit lower cover 170 is inserted.

On the other hand, as shown in FIG. 2 in detail, 300 has a box-shaped power supply case 330 in which the thickness at which the heat radiating module 110 is opened is substantially equal to the thickness of the heat radiating module 110, and contains desired parts. Power supply unit.

The power supply case 330 is located above the front side plate 331.
The lower edges project from the upper and lower plates of the case, respectively, and the upper and lower edges of the rear plate 332 project from the upper and lower plates of the case, respectively.

Further, a ventilation hole 335 is provided in the front plate 331 of the power supply case 330, and another ventilation hole 336 is provided in the rear plate 332. Printed board 301 parallel to the lower plate of power supply case 330
The power supply parts are mounted on the printed board 301.

A connector 302 is mounted on a side edge of the printed board 301 on the heat radiation module 110 side. Also,
A desired operation component is mounted on the front side plate to form a power board 310, which is connected to the power board 310, the printed board 301, and the power case 330.

On the other hand, as shown in FIG. 2, a printed board 160 having a width substantially equal to the thickness of the heat radiating module 110 is attached to a longitudinal side surface of the heat radiating module 110 on the power supply section 300 side via a spacing plate. I have.

The power supply section of the printed board 160
The connector 161 to which the connector 302 of 300 plugs in is mounted. Further, a connector 162 connected to the printed board 150 constituting a control section and the like is mounted on the heat dissipation module side of the printed board 160.

That is, the printed circuit board 160 connects the power supply section 300 to the printed circuit board 150 and the upper main circuit section 130. The printed board 160 and the lower main circuit section 140 are connected by a cable not shown.

The upper base plate 120 is provided with an escape hole at a position facing the printed board 162 through which a connection line between the connector 162 and the printed board 150 passes. An escape hole through which a connection line between the plate 160 and the lower main circuit section 140 passes is provided.

Since the power supply unit 300 is configured as described above, the upper and lower edges of the front and rear plates of the power supply case 330 are inserted into the corresponding guide grooves 121 and pushed, so that the power supply case 330 is A pair of base plates
Housed within 120. Then, the connector 302 of the power supply unit plugs into the connector 161 on the other side.

Therefore, the power supply section 300 is connected to the upper main circuit section 130 and the lower main circuit section 140 via a connector, a printed board 160, a cable and the like. The ejector (not shown) is attached to the outer corner of the power supply case 330, and the power supply unit 300
Is easy to remove.

Referring back to FIG. 1, reference numeral 210 denotes a unit surface plate constituting the front part of the housing. The unit surface plate 210 has a shallow box shape in which four sides of a rectangular main plate member are each bent inwardly to provide an edge plate.

A window frame 211 is provided at a position of the main plate member of the unit surface plate 210 facing the heat radiating module 110.
A plurality (two in the figure) of front fans 230 (convenient to use the holding frame 230A) are mounted in parallel inside the 211.

An opening 212 is provided at a position of the main plate member of the unit surface plate 210 facing the power supply unit 300, and the power supply
Are fitted and come out. In addition, the control panel 460
And input / output connectors 5 are attached to left and right ends.

The unit surface plate 210 is composed of a heat radiation module 110, a base plate 120, an upper main circuit part
130, the inner surface side of the main plate member is brought into contact with the front end surface of the base plate 120 of the lower main circuit portion 140, and is fixed to the end surface of the base plate 120 using screws.

Reference numeral 220 denotes a unit rear plate constituting the rear part of the housing. Unit back plate 220 is unit front plate 2
The four sides of the main plate member having the same shape as the main plate member of No. 10 are bent inwardly to form a shallow box shape provided with an edge plate, and a horizontally elongated window frame 221 is provided at the center of the main plate member.

A plurality (three in the figure) of rear fans 240 (convenient to use the holding frame 240A) are attached in parallel outside the window frame 221. Therefore, the rear fan 240 is connected to the heat dissipation module 110 and the power supply unit 300.
It is installed facing the back of.

The unit rear face plate 220 includes a heat radiation module 110, a base plate 120, an upper main circuit portion, which are integrally fixed.
130, the inner surface of the main plate member is brought into contact with the rear end surface of the base plate 120 of the lower main circuit portion 140, and is fixed to the base plate 120 using screws.

Reference numeral 510 denotes a unit side plate constituting a side surface portion of the housing on the side of the heat radiation module 110. The upper and lower side edges of the rectangular main plate member of the unit side plate 510 are each bent inward to provide a frame plate, and a mounting seat for bending the front side edge outward at a right angle and screwing and fixing the frame is provided.

Reference numeral 520 denotes a unit side plate that constitutes a side surface of the housing on the power supply unit 300 side. The unit side plate 520 is provided with a mounting seat which bends a front side edge outward at a right angle and is screwed and fixed to a frame.

In the unit side plates 510 and 520 described above, the front portion of the main plate member abuts against the edge plate of the unit surface plate 210, and is fixed to the unit surface plate 210 using screws, and the rear portion of the main plate member is the edge of the unit rear plate 220. The frame is assembled by abutting the plate and fixing it to the unit rear plate 220 using screws.

As shown in FIG. 3, the heat radiation module 11
After the base plate 120, the upper main circuit section 130, and the lower main circuit section 140 are integrally fixed, the unit upper cover 180 is aligned and placed on the upper surface, and the unit lower cover 170 is aligned on the lower surface. Place.

Then, the unit front plate 210 and the unit rear plate 220 are inserted so that the front and rear side edges of the unit upper cover 180 and the unit lower cover 170 are located inside the edge plate, respectively. Face plate
220 is screwed and fixed to the base plate 120.

Thereafter, the unit side plate 510 is inserted, and the front portion of the unit side plate 510 is fixed to the unit front plate 210 and the rear portion thereof is fixed to the unit rear plate 220 by screwing. After the power supply unit 300 is inserted between the base plates 120,
The unit side plate 520 is positioned and applied, and the front portion of the unit side plate 520 is fixed to the unit front plate 210 and the rear portion thereof is fixed to the unit rear plate 220 by screwing.

A handle is attached to the unit surface plate 210 so that the communication unit 100 can be easily pulled out of the frame. The communication unit 100 includes the upper main circuit unit 13 as described above.
0 is in close contact with the heat dissipation module 110 via the base plate 120, and the lower main circuit portion 140 is in close contact with the heat dissipation module 110 via the base plate 120. The power supply unit 300 is inserted between a pair of base plates 120.

Therefore, when the front fan 230 and the rear fan 240 are driven, the heat of the upper main circuit section 130 and the lower main circuit section 140 transmitted to the heat radiating module 110 is taken away by the cool air passing through the heat radiating module 110. Is discharged to the rear of the communication unit 100.

Further, the heat flows into the power supply case 330 through the opening of the unit surface plate 210 and the ventilation hole of the front side plate 331 of the power supply case, and removes the heat of the power supply unit 300. Then, the air whose temperature has risen is discharged to the rear of the communication unit 100 through the ventilation holes of the rear side plate 332 and the rear fan 240.

On the other hand, when the unit side plate 520 is removed, the power supply unit 300 can be easily attached and detached.
0 Maintenance and inspection work is easy. Also, the front fan 230
Is mounted inside the unit surface plate 210
Since the power supply and control panel components of the input / output connector 5 only protrude from the front side of the 210, connection of an external coaxial cable to the input / output connector and wiring work of the external coaxial cable are facilitated. .

[0088]

As described above, the present invention provides an opening in the unit surface plate, ventilation holes in the front and rear plates of the power supply case, and a rear plate of the power supply case in the unit rear plate. Since the rear fan is mounted corresponding to the ventilation holes, the cooling effect of the upper main circuit section, the lower main circuit section, and the power supply section is improved.

Further, since the upper and lower edges of the front and rear plates of the power supply case are inserted into the guide grooves of the base plate to insert the power supply unit, the power supply unit can be easily attached and detached. This makes maintenance and inspection of the power supply easier.

Further, since the front fan is mounted inside the unit surface plate, the work of connecting the external coaxial cable to the input / output connector and the work of wiring the external coaxial cable become easy.

While the conventional power supply section has at least four printed boards and cooling fins, the power supply section of the present invention has two printed boards and no cooling fins. Therefore, there is an effect that the structure of the power supply unit is simple and the cost is low.

[Brief description of the drawings]

FIG. 1 is a perspective view showing the present invention in a separated form.

FIG. 2 is a perspective view of an essential part of the present invention.

FIG. 3 is a perspective view of an embodiment of the present invention.

FIG. 4 is a front view of a communication device.

FIG. 5 is a perspective view showing a conventional example in a separated form.

FIG. 6 is a perspective view of a conventional example.

[Explanation of symbols]

1 Frame 2,100 Communication unit 5,5A I / O connector 11,110 Heat dissipation module 12,120 Base plate 13,130 Upper main circuit 14,140 Lower main circuit 21,210 Unit surface plate 22,220 Unit rear plate 23,230 Front fan 24,240 Rear fan 30,300 Power supply 31,310 Power panel 40 Control unit 46,460 Control panel 51,52,510,520
Unit side plate 16,180 Unit upper cover 17,170 Unit lower cover 121 Guide groove 212 Opening 301 Printed circuit board 330 Power supply case 331 Front plate 332 Rear plate 335,336 Ventilation holes

Continuation of the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) H05K 7/20

Claims (3)

(57) [Claims] 1. A housing comprising a unit front plate, a unit rear plate, a pair of left and right unit side plates, and a unit upper / lower cover, an upper / lower main circuit unit and a power supply unit housed in the housing, and the housing A communication unit comprising: a front fan mounted on a front part of the vehicle; and a rear fan mounted on a rear part of the housing. (110), and a pair of upper and lower members which are tightly attached to the upper and lower surfaces of the heat radiating module (110) and sandwich the heat radiating module (110) from above and below, and are mounted in the housing in parallel with the unit upper cover (180). A base plate (120), an upper main circuit portion (130) for closely attaching a case bottom plate to the surface of the upper base plate (120), and a case on the surface of the lower base plate (120). A lower main circuit portion (140) for mounting the bottom plate closely, and a pair of the bases; A power supply section (300) housed in a power supply case (330), which is mounted in parallel with the heat dissipation module (110) between (120), and provided on the front side plate and the rear side plate of the power supply case (330), respectively. And an opening (212) opposed to the ventilation hole at the front of the power supply section (300), and a front fan (230) is arranged in parallel at a location corresponding to the heat radiation module (110). The unit surface plate (2
10), and a unit rear plate (220) having a rear fan (240) attached in parallel at a position facing the rear of the power supply unit and the rear of the heat radiating module (110). A pair of left and right unit side plates (510, 520) are detachably fixed to the unit surface plate (210) detachably fixed to the base plate (120) and the rear fan (240), respectively. 210), unit rear panel (22
0) and a pair of left and right unit side plates (510, 520) are assembled in a frame shape. 2. The power supply case (330) has upper and lower edges of a front plate and upper and lower edges of a rear plate protruding from a bottom plate and an upper plate of the power supply case (330), respectively. By inserting the upper and lower edges into guide grooves (121) provided opposite the pair of base plates (120), the power supply unit (300) can 2. The communication unit according to claim 1, wherein the communication unit is detachably mounted on the communication unit. 3. The communication unit according to claim 1, wherein a front fan (230) is mounted inside the unit surface plate (210).